Stats

  • Locked Locked
  • Replies 4
  • Subscribers 125
  • Views 17293
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Using OPTION SCALE for only a particuar instance in Virtuoso ADE

jdp721

Hi,

I am simulating a schematic in Virtuoso ADE.

Besides different constituent sub-circuits, the schematic also includes a netlist of a sub-circuit (associated using "spectre" symbol view), yielding a overall netlist like:

simulator lang=spectre
global 0
include "/designPackages/design_installer/scl/scl_pdk/design_kit/models/hspice/ts18sl_scl.lib" section=tt_18
include "/research1/user/scl180_analog/physical_verification/pex/temp/Ckt_block.pex.netlist"

......

// various sub circuit definitions:

subckt cmos_inv in out vdd vss
M0 (out in vss vss) n18 w=2 l=0.2 as=0.96 ad=0.96 ps=4.96 pd=4.96 m=1

......

// main schematic definition and simulation settings

......

simulatorOptions options reltol=1e-3 vabstol=1e-6 iabstol=1e-12 temp=25.0 tnom=27 scalem=1.0 scale=1e-6 gmin=1e-12 ......

......

Now the issue is that most of my sub-circuits defined here need the scale=1e-6; but, the sub-circuit defined in "Ckt_block.pex.netlist" doesn't require this scale (as all values in that netlist are actual ones).

Is there any way to use a local scale statement (like scale=1e+6) in Ckt_block.pex.netlist (but that shouldn't affect the scale used in the main schematic)?

Parents
  • Andrew Beckett

    You can do this using the "MTS" (Multi Technology Support) mechanism in ADE XL (or the new ADE Explorer or Assembler in IC617). To do this you need to use Right Mouse over the test name to pick Simulator, and turn on the MTS checkbox there (you must be using a config for this to work), and then you can do Right Mouse->MTS Options over the test name. Having done that, you can pick things like scale for different parts of your hierarchy and set them differently.

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    You can do this using the "MTS" (Multi Technology Support) mechanism in ADE XL (or the new ADE Explorer or Assembler in IC617). To do this you need to use Right Mouse over the test name to pick Simulator, and turn on the MTS checkbox there (you must be using a config for this to work), and then you can do Right Mouse->MTS Options over the test name. Having done that, you can pick things like scale for different parts of your hierarchy and set them differently.

    Regards,

    Andrew.

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.